Canada



PHONOGRAPH REPEATER 7 Filed. Jan. 5, 1926 2 Sheets-Sheet l YINVENTOR. HERMAN H0055 BY m w I ATTORNEYS.

H. HOUSE PHONOGRAPH REPEATER June mi 1927. 1532,47?

Filed Jan. 5, 1926 2 Sheets$heet 2 m If 17 A A-TTOR-VEYS graph repeater embodying my invention and a phonograph;

Patented June 14, 1927.

HERMAN HOUSE, or vnlvcouvna narrrsn oonmvrnra, CANADA,

rnolvoonarrr REPEATER; H i

Application filed January 5,4926. Serial No. 79,401.

My invention relates to and has for its purpose the provision of an extremely simple and lnexpenslve device readily attachable to any phonograph of conventional form for actuating the stylus to repeat the playing of the record indefinitelyand automatically by utilizing the. movement of the phono graph turntable and to the exclusion of extraneous or supplemental springs or other actuating devices.

It is also a purpose of my invention to provide a phonograph repeater which in effecting the repeated playing of a record automatically actuates the stylus with such case of operation as to completely eliminate noise and injury to the record. 7

I will describe only one form of phonowill then point out the novel features thereof in claims.

In the accompanying drawings, Figure 1 is a view showing in top plan one form of repeater embodying my invention 1n applied posit-ion to a conventional form of phonograph; V

Figure 2 is a view showing the repeater in side elevation and in applied position to Figures 3 and 4 are fragmentary viewsshowing in side elevation two positlons which the cam member occupies during operation thereof;

Figure 5 is a fragmentary vertical sectional view showing the mounting for the disk supporting arm of the repeater;

Figure 6 is a vertical sectional vlew taken.

on the line 66 of Figure 5;

1 Figure 7 is a fragmentary sectional view taken on the line 77 of Figure 2. Similar reference characters refer to sinnlar parts in each of the severalviews- Referring specifically to the drawings, my

,-invention, in v its present embodiment, is,

shown applied to a conventional form. of phonograph comprising a platform through which extends a shaft 16 carrying a turntable 17 and upon which a record '18 is adapted to repose and be rotated inthe usual manner. provided withasound box 20 carrying a stylus 21 which is adapted to engage within 7 the sound groove ofthe record and on the rotational movement of the latter to be fed.

inwardly toward the center of the disk.

A pivoted tone arm 19' isv I llhe repeating device embodying my invention comprises a bracket 22 secured to and upstanding from the platform 15 and slotted to receive a U-shaped head 23 of an arm 24, the head 'being fulcrumed on a pin 25 extending through the bracket. Through the medium of this pin 25, the arm, together with the head, is pivotally supported to'occupy substantially horizontal position, as shown in Figure 2 -or"a'n elevated position, in which latter position the arm is latched by a pin 26 engaging within a suitable recess in the head 23 and urged to this position by a 'spring27,'all as clearly shown in Figure'6. The arm 24; is limited in its downward movement to the aforementioned horizontal position by a pin 28 extending through the bracket and engaging one of the parallel portions of the head23, A screw 29 adjustable in the bracket 22 engages the other parallel portionof the head and by adjustment may vary the position of the arm 24 for a purpose which will be hereinafter described.

. As clearly shown in Figure 1, the arm 24 is curved in an arc concentric with respect to-the pivot of the tone arm 19, and at the outer end of this arm a disk 30 is rotatably mounted thereon, such disk being provided with afiat peripheral portion 31. Fixed to the disk is a cam member 32 carrying a projection33 adapted to be engaged by a tripping member 34 adjustable on an arm 35 and adapted to be locked and a finer adjustment secured through the medium of a screw 36. This arm 35 is likewise curved on an arc concentric with respect to the pivot .of the tone arm and, as shown in Figure 1,

it is pivotally connected at the point indicated at 37 to a bracket 38 so as to swing in a horizontal plane. The bracket in turn is secured to the tone arm adjacent the sound box 20, and a-stop arm 39 is fixed to the bracket 38 for engagement witha stop finger 4O constructed as shown for adjustment longitudinally on the arm 24. To provide a finer adjustment for the stop finger 40 with ,respect tothe stop arm a screw 41 is ad- .arm 24, and likewise secured to the arm is a l-atclrmembe'r 43 adapted to engage within a recess 44 of the disk to limit the rotational movement otthe disk to one revolution; at each operation of the devic eand in such manner thatthe flat portion 31 at the completion. of the revolution will bedisposed downwardly, as shown in Figure 2.

Tl13 operation of the rotatingdevice is as follows: lVith the parts of the device in the positions shown in Figures; 1 and 2. the tone arm 19 as it swings inwardly toward the cen ter of the record imparts a corresponding movement to the arm35, thus slowly feeding the trip, member 34 inwardly toward the cam member 32. As the'stylus 21 reaches the inner end of the soundfgroove, the trip member lus 21 out of contact with the record.

34 engages the projection33 as shown in Figure 3, and thus initiates a rota-tive movementof the cam member, and, the disk being fixed to the cam member, itis likewise rotated to cause the curved periphery thereof to move into contact with the record 18. Under the rotative movement of the record, the disk is likewise rotated, thus continuing therotative movement of the cam member and thus causingthe latter to act upon the arm 35. Theshapeof the cam member32 is such that in the normal position thereof? itis out of contact with the arm as shown in Figure 3,"butwhen rotated to the position shown in Figure 4' it engages and elevates the arm 35 sufiiciently to elevate and thus move the sty- Continued movement of'the cam member through its frictional contact with the arm 35 reverses the movement of the arm, and as the arm is attached-to the tone arm 19, it will be clear that this reversal in movement will swing the tone arm outwardly to starting position. As the tone. arm reaehes startingposition, thecamrmember 32inovesoutof engagement with the arm 35,- thus ;13e1?niittin thefllatter to be lowered and with it the tone rm, so

that, the stylusis now lowered into engagement with the record.

The. outward. swinging in .veiiient offihe 'rerieiar'n is limited by the fiage {40, it

understood stop; [39 engag s hesr p eager, so techeek. the out-- 'iv ardmovement oft e t one'ariin the rep- 'er nstant. By ma lngitheis op finger adj ust-able and thetiip nieiiiber likewis e adjustable, it will be manifest that the operation of the repeating device can be controlled to permit of itsadaptation to different size records and to records having sound grooves of difterent lengths. V

In theret urn of the-disk 30- to the normal position shown in Figure 2, wherein its fiat side 31 is disposed adjacent the record 18, the latch 43 engages within the notch 44 and thus functions to prevent further rotation of the disk, so that the cam member 32 is likewise returned to normal position. v JVhen changing records, the arm24 can be elevated about its pivot, 25 and latched in such position by thepin 26, whereby it will not interfere withthe application or removal of records toor fromthe turntable. 7 Although I have herein shown and 'described only one form of phonograph repeater embodying my invention, it is to be understood; that various changes and modifications may bemade therein without departing from 1 the spirit of the invention. and the spirit and scope of the appended claims.

I claim as my invention:

1. A phonograph repeater comprising an arm adapted to extend over a turntable, a diskrotatable on the arm and having a. flat peripheral portion, a cam fixed to the disk for rotation therewith, a second arm securcd to a tone arm for movement therewith, means operable by the second arm for initiating rotativeino vement of. the cam to bring the curved periphery of the disk into contact with a record on the turntable whereby the diskand consequently the cam will be rotated with the cam trictionally engaging the arm to actuate the latter and thus return the tone arm to normal position, and means for controlling the rotative movement of the disk so that the fiat portion thereofwill be returned and held in disengaged position with respect to the record.

2. A. phonograph repeater comprising an arm adapted to extend over a turntable, a 'disk rotatable on the arm and having a flat peripheral portion, a cam fixed to the disk for rotation therewith, a second arm secured to atone arm for movement therewith, a projection on the cam, a tripping member on the secondarmadapted to engage said projection, and cooperating stops on said 3. A phonograph repeater as e' bodied in clai 2 whereinthetripping member and stop iiienlibers are adjustable in the manner and for the purposedescribed.

- 4. A phonograph repeateras embodied in claim? be second arni is 'movable to the stops to secure a finer adjustment thereof with respect to the other stop.

7. A phonograph repeater as embodied in claim 2 wherein means is provided for adjusting the first arm vertically.

8. A phonograph repeater as embodied in claim 2 wherein the first arm is pivoted to occupy a horizontal position and an upwardly inclined position, and means for latching the arm in the inclined position.

HERMAN HOUSE. 

